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Viewing changes to Development/architecture/gpu/opencl.txt

  • Committer: Suren A. Chilingaryan
  • Date: 2013-11-08 01:07:23 UTC
  • Revision ID: csa@dside.dyndns.org-20131108010723-gfaem1vwkt6262m1
virtualization mainly

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Development/architecture/gpu/opencl.txt
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Problems
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========
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 * NVIDIA LibOpenCL.so ignores ATI platform, the ATI one works well with both NVIDIA and ATI.
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OpenCL
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======
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Constant Memory -  The OpenCL driver will then load the data from that buffer 
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into constant memory transparently to the application.
 
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Usage
 
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=====
 
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* Overlapping memory transfers, set environmental variable
 
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    GPU_ASYNC_MEM_COPY=2 
 
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Architecture
 
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============
 
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 - Pinned Memory - is limited by the size of available GPU memory (minimum among all 
 
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 of the cards). Actually, for each pinned buffer, the memory on all GPUs are 
 
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 allocated. So, the amount of pinned memory is significantly limited.
 
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 - Constant Memory -  The OpenCL driver will then load the data from that buffer 
 
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 into constant memory transparently to the application.